Water-cooling system for centrifugal-pump bearings



, a. w. WILSON. 'WATER COOLING SYSTEM FOR CENTBIFUGAL PUMP BEARINGS.

- APPLICATION FILED .IIINE II. I919- 1,36 2 ,551. Y Patented Dec. 14, 1920..

IIIIIIIIIIIIIIIIAw :VIIIIIIIIIIIA pm 7 ATTORNEY GFF'ICE.

GEORGE W. WILSON, 0F FRESNO, CALIFORNIA.

WATER-COOLING SYSTEM FOR CENTRIFUGrAL-IPUMP BEARINGS.

Application filed June 11,

To all whom it may concern:

Be it known that I, GEORGE W. WILSON, a citizen of the United States, and resident of Fresno, in the county of Fresno and the State of California, have invented a new and useful Improvement in Water-Cooling Systems for Centrifugal-Pump Bearings, of which the following is a specification.

My invention relates to centrifugal pumps and more especially to a water cooling system whereby the shaft and bearing of the pump can be kept cool while the pump is in operation. It is well known that to do effective work the propeller of the pump must be rotated very rapidly, and such rapid movement frequently heats the bearing which makes the lubricant on the bearing dry and ineifectual. For the purpose of keeping the bearings cool while being rotated at a high rate of speed, I have formed a water cooling system whereby the bearing is constantly surrounded with cold water. This is accomplished by means of the device illustrated on the accompanying drawing in which Figure 1 shows a sectional view of parts of a centrifugal pump showing the propeller shaft in the bearing. Fig. 2 is atrans-sectional view along the dotted line w% in Fig. 1. Fig. 3 shows an end view of the impeller, and a sectional view of the bearing and housing, and leads from the cooling chamber to the suction portion and to the expulsion portion of the pump, along the line 3 -y on Fig. 1.

In said drawings B is the impeller shaft to which the impeller C is attached. D is the housing cap for the impeller having an intake opening 2 and an outlet opening 3. D is the main portion of the housing for the impeller. The chamber formed for the impeller is designated as K. It will be noted that when the impeller C is rotated there will be a suction in the area adjacent to the center of the impeller and expulsion at its periphery. The area of suction is designated as 2 This suctionarea is the same on both sides of the impeller, although such suction area on one side of the impeller is blocked by the bearing E hereinafter referred to. The area of expulsion is desi nated as 3. F is the bearing for shaft Specification of Letters Patent.

portion of the chamber 2*.

Patented Dec. 14, 1920.

1919. Serial No. 303,368.

which terminates at the end adjacent to the plump wlth an air tight bearing E. Bearing is more fully disclosed and illustrated in United States Patent No. 1,295,974 issued March 4, 1919, to Andrew P. Dron and the applicant herein, George W. Wilson, as joint inventors. G is the housing for bearing F. This is formed with an annular chamber I-I surrounding the bearing. Chamber H has a lead lto the expulsion portion of the chamber 3 which tends to draw water into chamber H. On the side of the chamber H opposite to the lead 4 is a lead 5 to the suction It will be noted that when the pump is in operatlon and discharging water the expul- S1011 power will drive the water into chamber H through lead 4: and the suction power will withdraw the Water from chamber H through lead 5, thus keeping up a constant circulation. of fresh water which is approximately the same temperature as that flowing from the pump.

L is an oil cup for lubricating the journal. M is a valve for cutting the flow of water from the chamber H to the impeller C.

I claim as new and ask for Letters Patent 1. In combination with a centrifugal pump, having an impeller attached to a main shaft rotatable in a bearing, a housing for the impeller, and a housing for the bearing having an annular chamber around the outside of the bearing, a lead from said annular chamber to the interior of the impeller housing where the impeller forms expulsion, and a lead on the opposite side of the annular chamber to the interior of the impeller housing where the impeller forms a suction, substantially as described.

2. In a rotary pump having an inlet and an outlet, the combination of a rotor, a hearing for said rotor and a housing inclosing said bearing, said housing being formed with a chamber surrounding the bearing, the chamber having a lead on one side to the intake of the pump and on the other side to the outlet, substantially as described.

' GEO. W. WILSON.

Witnesses:

CLEO K. CURTIS, LAURA Honr. 

